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Message Cell

Overview​

The LMChatMessageCell is a versatile table view cell designed to display various types of chat messages. It serves as a base class for specific message type cells and provides core functionality for message display, user interactions, and customization options.

Functionality​

Protocols​

LMChatMessageCellDelegate​

  • onClickReactionOfMessage(reaction:indexPath:): Called when a user interacts with a message reaction.
  • onClickAttachmentOfMessage(url:indexPath:): Triggered when an attachment in the message is tapped.
  • onClickGalleryOfMessage(attachmentIndex:indexPath:): Handles taps on gallery items within a message.
  • onClickReplyOfMessage(indexPath:): Called when the reply action is initiated for a message.
  • didTappedOnSelectionButton(indexPath:): Triggered when the message selection button is tapped.
  • onClickOfSeeMore(for:indexPath:): Handles the "See More" action for truncated messages.
  • didCancelAttachmentUploading(indexPath:): Called when an attachment upload is cancelled.
  • didRetryAttachmentUploading(indexPath:): Triggered when retrying a failed attachment upload.
  • didTapOnProfileLink(route:): Handles taps on profile links within messages.

Protocols Implemented​

  • LMAttachmentLoaderViewDelegate: Handles attachment uploading cancellation.
  • LMAttachmentUploadRetryViewDelegate: Manages retry attempts for failed uploads.
  • LMChatMessageContentViewDelegate: Processes user interactions with message content.

UI Components​

  • chatMessageView: An instance of LMChatMessageContentView that displays the message content.
  • retryContainerStackView: A stack view containing the retry button.
  • retryButton: A button for retrying failed message sends.
  • selectedButton: A button for message selection in multi-select mode.

Methods​

  • setData(with:index:): Configures the cell with the provided data model and index path.
  • updateSelection(data:): Updates the cell's selected state.
  • retrySendMessage(_:): Handles retry attempts for failed message sends.
  • tappedTextView(tapGesture:): Processes taps on text content, handling URL and route interactions.

Customization​

CustomChatMessageCell.swift
class CustomChatMessageCell: LMChatMessageCell {
    override func setupViews() {
        super.setupViews()
        // Add custom views here
    }

    override func setupAppearance() {
        super.setupAppearance()
        // Customize cell appearance here
    }

    override func setData(with data: ContentModel, index: IndexPath) {
        super.setData(with: data, index: index)
        // Add custom data configuration here
    }
}
AppDelegate.swift
func application(_ application: UIApplication, willFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool {
    LMUIComponents.shared.chatMessageCell = CustomChatMessageCell.self
    // ...
    return true
}